So far I only know some kind of awareness of the trade are as follows:
1. Wary Margincall
2. Be wary of trend changed dramatically in a few minutes.
3. Be wary of trading lot size (risk)
Is there any other precautions we need to learn, and what effect that might occur if we ignore it?

Trade vigilance is the process of checking on the safety and legality of certain goods before they enter a country's borders. Trade vigilance can involve checking goods at entry points, such as airports and seaports, to make sure they do not contain restricted or illegal items. It can also include tracking supply chains and monitoring the location of goods dispersed in-country.